inference

  1. R

    Generalizability of results / External validity

    Hi everyone, Employment of probability sampling to draw a sample from the population in a quantitative study (cross-sectional design, data collected via surveys) is one of the criteria needed to make inferences to the population. What other criteria are in play? How to determine, where...
  2. L

    Mistakes by teachers of statistics

    A while ago I came across a paper that claimed many statisticians (or maybe it was teachers of statistics in universities) did not under some basics of statistical inference, and it went on to give several multiple choice questions and described the various mistakes often made. I don't recall...
  3. J

    How can i compute the following situation in R?

    Suppose that an urn contains a number of black and a number of white balls, and suppose that it is known that the ratio of the numbers is $\frac{3}{1}$ but that it is not known whether the black or the white balls are more numerous. Find the estimator of the probability of drawing a black ball...
  4. V

    Estimating parameter from conditionals of non-independent data

    The context of this problem is the estimation of the distribution of a parameter v given sets of data A and B, where A and B are not independent. Suppose I know P(v | A) and P(v | B). Both of these distributions are definitely not normal (the answer should not make any assumptions about the...
  5. G

    help for final dissertation in finance- very easy stat - URGENT! :-)

    Hi I am about finishing my thesis in finance but I don't remember anything about statistics and I need your help!! here is my issue: the topic of the thesis is "exit strategies of private equity funds in luxury goods company". The hypothesis is that, given 3 possible types of exits (trade...
  6. S

    Does linear regression make inferences about a population from sample data?

    In psychology we usually collect samples because we do not have access to the entire population. Given this, is regression an inferential technique...for example if i ran a linear regression model on the effect of impulsivity and aggression on the number of car accidents (Just an example!) based...
  7. I

    Making statistical inference considerations

    May I ask what are the considerations in making statistical inference? I have the following ideas in my mind, but I am not sure what are really the necessary considerations: • random sample from the population of interest • performance of experiment in accordance with certain principles •...
  8. S

    Estimating a pdf from binomial trials - point me in the right direction?

    Hi, I'm afraid I'm not an expert in statistics, but I have a particular problem I'm interested in solving. I'm pretty sure this area already has a lot of literature, but I'm having difficulty finding something directly applicable to what I'm doing, so it would be great if somebody could nudge...
  9. H

    Significance Level Help

    The Suzuka Automotive Company claims that its Accent model gets the best gas mileage, in terms of miles per gallon (mpg), of any car on the market. More specifically, it contends that the Accent gets better mileage than the Hondo Slavic CPX model. To test this claim, Suzuka retains an...
  10. J

    Multiple dependent proportions problem - Election

    Hello, I have spent a few hours trying to untangle this problem by my knowledge of statistics appears to be too limited for me to come to a solution. I hope you can help me with this. I've tried computing the margin of error for each proportion, but I can't figure out how to deal with all...